10
Operation
LOW Mode
LOW mode should be used to maximize engine braking and minimize the use
of the brake pedal. For example, when driving down long grades or when
coming to a stop.
•
Selects lowest available gear for start gear. (see Note *). The starting
gear cannot be changed in LOW mode.
•
If LOW is selected while moving, the transmission will not upshift
(except for the Transmission Override conditions noted below). The
transmission system will downshift at the earliest opportunity to pro-
vide maximum engine braking.
Transmission LOW Override
•
If the vehicle is being back driven and the engine is approaching a
higher than normal level, the transmission system will override the
MANUAL position and perform and upshift.
Warning:
UltraShift
PLUS
initiates upshifts from MANUAL and LOW for
engine over speed protection. Some engines do not use the Eaton engine
overspeed protection.
Note:
At higher engine speeds additional engine braking in LOW Mode could
cause a loss of traction when on slippery surfaces.
Note:
*If the driver attempts to select a non-neutral mode without depressing
the service brakes the transmission will not shift into gear and the driver
will have to return to Neutral and depress the brakes before selecting the
desired mode again.
Important:
If the driver depresses and holds both pedals (even if done acci-
dentally) the launch will be abrupt and the engine and brake forces may rock
and bounce the vehicle. Releasing either pedal will stop this immediately.
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